DIY LIFI

[KAN1102]

I want to build a LIFI system but got no clue on how to.There are a few guides online but none of them make sense.I plan on using instead of my wifi if it works out.

[LienusLateTips]

Ethernet would probably still be faster AFAIK

[KAN1102]

2 minutes ago, JDE said:

Ethernet would probably still be faster AFAIK

@JDE I know that but I want this for streaming music and also(call me crazy,but) it is kinda cool.

[Mira Yurizaki]

The theory isn't that hard, you blink a light to represent the bits. So in a simple case, you would have a light on one end and a photo detector on another.

 

The problem is you can't use a light source that's in the visible spectrum unless it's a very narrow wavelength and of much higher intensity than what you'd expect the natural environment to be. Then the limiting factor would be how quickly the light source can ramp up or change intensity.

 

Or you can just modify existing technology like a higher powered IrDA or something.

[RadiatingLight]

Yeah... Not realistically gonna happen.

LI-FI doesn't even work well in controlled lab environments with expert scientists. no way it'll work in your home.

It'd literally be easier to carry an Ethernet>USB-C dongle and hang Ethernet cables from the ceiling 6 inches apart throughout your entire house to use with your phone.

[mynameisjuan]

7 hours ago, M.Yurizaki said:

The theory isn't that hard, you blink a light to represent the bits. So in a simple case, you would have a light on one end and a photo detector on another.

 

The problem is you can't use a light source that's in the visible spectrum unless it's a very narrow wavelength and of much higher intensity than what you'd expect the natural environment to be. Then the limiting factor would be how quickly the light source can ramp up or change intensity.

 

Or you can just modify existing technology like a higher powered IrDA or something.

Or in other words....fiber...

[Mira Yurizaki]

The trouble with Li-Fi itself is it probably wants to be omnidirectional. But that kind of doesn't work if you have a roomful array of LEDs flashing unless they were all flashing at exactly the same time. Then there's the receiver part. But otherwise, Li-Fi is just Wi-Fi using the visible spectrum instead of RF.

 

But aside from that, high speed free space optical communication isn't a pipe dream. The visible spectrum just as its limitations and quirks you need to be aware of.

[KAN1102]

On 05/03/2018 at 7:16 PM, mynameisjuan said:

Or in other words....fiber...

@mynameisjuan very true!!XD